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QML locator filter framework for QField plugin (#5841)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| /*************************************************************************** | ||
| qfieldlocatorfilter.cpp | ||
| --------------------- | ||
| Date : November 2024 | ||
| Copyright : (C) 2024 by Mathieu Pellerin | ||
| Email : mathieu at opengis dot ch | ||
| *************************************************************************** | ||
| * * | ||
| * This program is free software; you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
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| #include "qfieldlocatorfilter.h" | ||
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| #include <QEventLoop> | ||
| #include <QQmlContext> | ||
| #include <QQmlEngine> | ||
| #include <QUrlQuery> | ||
| #include <qgsfeedback.h> | ||
|
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||
| QFieldLocatorFilter::QFieldLocatorFilter( QObject *parent ) | ||
| : QgsLocatorFilter( parent ) | ||
| { | ||
| setUseWithoutPrefix( false ); | ||
| } | ||
|
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| QFieldLocatorFilter *QFieldLocatorFilter::clone() const | ||
| { | ||
| QFieldLocatorFilter *filter = new QFieldLocatorFilter(); | ||
| filter->setFetchResultsDelay( fetchResultsDelay() ); | ||
| filter->setName( mName ); | ||
| filter->setDisplayName( mDisplayName ); | ||
| filter->setPrefix( mPrefix ); | ||
| filter->setParameters( mParameters ); | ||
| filter->setSource( mSource ); | ||
| filter->setLocatorBridge( mLocatorBridge ); | ||
| return filter; | ||
| } | ||
|
|
||
| void QFieldLocatorFilter::setParameters( const QVariantMap ¶meters ) | ||
| { | ||
| if ( mParameters == parameters ) | ||
| return; | ||
|
|
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| mParameters = parameters; | ||
| emit parametersChanged(); | ||
| } | ||
|
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| void QFieldLocatorFilter::setSource( const QUrl &source ) | ||
| { | ||
| if ( mSource.path() == source.path() ) | ||
| return; | ||
|
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||
| mSource = source; | ||
| QUrlQuery query( mSource ); | ||
| if ( !query.hasQueryItem( "t" ) ) | ||
| { | ||
| // Bypass caching to insure updated QML content is reloaded when the plugin is loaded | ||
| query.addQueryItem( QStringLiteral( "t" ), QStringLiteral( "t=%1" ).arg( QDateTime::currentSecsSinceEpoch() ) ); | ||
| mSource.setQuery( query ); | ||
| } | ||
| emit sourceChanged(); | ||
| } | ||
|
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| void QFieldLocatorFilter::setLocatorBridge( LocatorModelSuperBridge *locatorBridge ) | ||
| { | ||
| if ( mLocatorBridge == locatorBridge ) | ||
| return; | ||
|
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||
| mLocatorBridge = locatorBridge; | ||
| emit locatorBridgeChanged(); | ||
| } | ||
|
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| void QFieldLocatorFilter::setDelay( int delay ) | ||
| { | ||
| if ( fetchResultsDelay() == delay ) | ||
| return; | ||
|
|
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| setFetchResultsDelay( delay ); | ||
| emit delayChanged(); | ||
| } | ||
|
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| void QFieldLocatorFilter::setName( const QString &name ) | ||
| { | ||
| if ( mName == name ) | ||
| return; | ||
|
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| mName = name; | ||
| emit nameChanged(); | ||
| } | ||
|
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| void QFieldLocatorFilter::setDisplayName( const QString &displayName ) | ||
| { | ||
| if ( mDisplayName == displayName ) | ||
| return; | ||
|
|
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| mDisplayName = displayName; | ||
| emit displayNameChanged(); | ||
| } | ||
|
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| void QFieldLocatorFilter::setPrefix( const QString &prefix ) | ||
| { | ||
| if ( mPrefix == prefix ) | ||
| return; | ||
|
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| mPrefix = prefix; | ||
| emit prefixChanged(); | ||
| } | ||
|
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| void QFieldLocatorFilter::fetchResultsEnded() | ||
| { | ||
| mFetchResultsEnded = true; | ||
| } | ||
|
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| void QFieldLocatorFilter::prepareResult( const QVariant &details ) | ||
| { | ||
| const QVariantMap detailsMap = details.toMap(); | ||
| QgsLocatorResult result; | ||
| result.setUserData( detailsMap.value( QStringLiteral( "userData" ) ) ); | ||
| result.displayString = detailsMap.value( QStringLiteral( "displayString" ), QString() ).toString(); | ||
| result.description = detailsMap.value( QStringLiteral( "description" ), QString() ).toString(); | ||
| result.score = detailsMap.value( QStringLiteral( "score" ), 0.5 ).toDouble(); | ||
| result.group = detailsMap.value( QStringLiteral( "group" ), QString() ).toString(); | ||
| result.groupScore = detailsMap.value( QStringLiteral( "groupScore" ), 0.5 ).toDouble(); | ||
| const QVariantList actions = detailsMap.value( QStringLiteral( "actions" ) ).toList(); | ||
| for ( const QVariant &action : actions ) | ||
| { | ||
| const QVariantMap actionMap = action.toMap(); | ||
| result.actions << QgsLocatorResult::ResultAction( actionMap.value( QStringLiteral( "id" ), 0 ).toInt(), actionMap.value( QStringLiteral( "name" ), QString() ).toString(), actionMap.value( QStringLiteral( "icon" ), QString() ).toString() ); | ||
| } | ||
| emit resultFetched( result ); | ||
| } | ||
|
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| void QFieldLocatorFilter::fetchResults( const QString &string, const QgsLocatorContext &context, QgsFeedback *feedback ) | ||
| { | ||
| if ( mSource.isEmpty() ) | ||
| return; | ||
|
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| QQmlEngine engine; | ||
| QQmlComponent component( &engine ); | ||
| component.loadUrl( mSource ); | ||
| QObject *object = component.create(); | ||
| if ( object ) | ||
| { | ||
| mFetchResultsEnded = false; | ||
| // These SIGNAL() SLOT() macros are needed, it is the only connect syntax that will work with signals declared within the QML environment itself | ||
| connect( object, SIGNAL( prepareResult( QVariant ) ), this, SLOT( prepareResult( QVariant ) ) ); | ||
| connect( object, SIGNAL( fetchResultsEnded() ), this, SLOT( fetchResultsEnded() ) ); | ||
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| QEventLoop loop; | ||
| connect( object, SIGNAL( fetchResultsEnded() ), &loop, SLOT( quit() ) ); | ||
| connect( feedback, &QgsFeedback::canceled, &loop, &QEventLoop::quit ); | ||
|
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| QMetaObject::invokeMethod( object, QStringLiteral( "fetchResults" ).toStdString().c_str(), QVariant( string ), QVariant::fromValue<QgsLocatorContext>( context ), QVariant::fromValue( mParameters ) ); | ||
| if ( !mFetchResultsEnded ) | ||
| { | ||
| loop.exec(); | ||
| } | ||
| object->deleteLater(); | ||
| } | ||
| } | ||
|
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| void QFieldLocatorFilter::triggerResult( const QgsLocatorResult &result ) | ||
| { | ||
| QMetaObject::invokeMethod( this, QStringLiteral( "triggerResult" ).toStdString().c_str(), QVariant::fromValue<QgsLocatorResult>( result ) ); | ||
| } | ||
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| void QFieldLocatorFilter::triggerResultFromAction( const QgsLocatorResult &result, const int actionId ) | ||
| { | ||
| QMetaObject::invokeMethod( this, QStringLiteral( "triggerResultFromAction" ).toStdString().c_str(), QVariant::fromValue<QgsLocatorResult>( result ), QVariant( actionId ) ); | ||
| } |
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